Skip to main content

useState() ↔ Stateful Hook to persist single state value in FC

const [_value, _setter] = useState(initial)

image

image

Lazy Initial value​

function pass as Parameter into useState(), to assign return value as Initial State value, on first-call only

!flow diagram of useState in simple counter image

[<span data-tooltip-id="preview__9RQAwgZMuYidD8May">useState()</span>](usestate) vs [<span data-tooltip-id="preview__3apmEvsNEPPRaXSB9">CC</span>](cc)

References​

  1. Lazy Initial value ↔ function pass as Parameter into useState(), to assign return value as Initial State value, on first-call only

  2. TS infers type "never" for init {} or [] in [**_useState()_**](usestate) ↔ 

Type 'string' is not assignable to type 'never'.ts(2322)